Grimsby Old Blockhouse, 16th-century coastal fortification in Tresco, United Kingdom.
The Grimsby Old Blockhouse stands on Block House Point, featuring substantial stone walls that overlook Old Grimsby Harbour and the surrounding sandy beaches.
This Grade II listed building served as a defensive structure during the Civil War when Parliamentarian forces launched attacks against the Royalist garrison in the area.
The blockhouse represents military engineering of Tudor England, demonstrating the methods used to protect maritime territories during the sixteenth century.
Visitors can reach the structure by following a twenty-minute walking path from Old Grimsby, with additional historical sites located along the coastal route.
The structure forms part of a network of Tudor fortifications on Tresco, including Cromwell's Castle and King Charles' Castle, creating a military heritage triangle.
Location: Tresco
Part of: Mid-16th century blockhouse and ramparts with adjacent walling and occupation deposits at Block House Point
Website: https://english-heritage.org.uk/visit/places/old-blockhouse
GPS coordinates: 49.95852,-6.32752
Latest update: March 6, 2025 04:10
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